public function getAreas()
{
$areas = array();
ob_start();
fx::listen('render_area.get_areas', function ($e) use(&$areas) {
$areas[$e['area']['id']] = $e['area'];
});
$this->render(array('_idle' => true));
fx::unlisten('render_area.get_areas');
// hm, since IB render res is cached, we can not just remove added files
// because they won't be added again
// may be we should switch off caching for idle mode
//fx::page()->clear_files();
ob_get_clean();
return $areas;
}